Lens-holder.



A. E. MAYNARD. LENS HOLDER.

APPLICATION FILED JUNE 11| 19H1.

1,1 9 1,905. Patented July 18, 1916;

WIT/VESSES: I/I/I/E/VTOR l l ALBERT E. MAYA/ARD g/@25% By A TTOHNEYS ALBERT E. MAYNARD, 0F SOUTHBRIDGE, MASSACHUSETTS, ASSIGNOR TO AMERICAN OPTICAL COMPANY, OF SOUTHBRIB-GE, MASSACHUSETTS, A VOLUNTARY ASSOCIA- TION 0F MASSACHUSETTS.

LENS-HOLDER.

T 0 all whom t may concern:

Be it known that I, ALBERT E. MAYNARD, a citizen of the United States, residing at Southbridge, in the county of lVorcester and State of Massachusetts, have invented certain new and useful Improvements in Lens-Holders, of which the following is a specification. a

My invention relates to improvements in lens holders, and has particular reference to an improved holder for use in properly positioning lenses within an edging machine or the like. a

The leading object of my invention is the provision of a simple and eflicient) holder which may be readily secured in position to hold one or a plurality of lenses, as may prove desirable. l

A further object of my invention is the provision of an improved holder which shall embody means for putting an additional spring tension grip on the lenses after the holder has been brought into correct gripping engagement therewith.

Other objects and advantages of my improved lens holdershould be readily apparent from the following description taken in connection with the accompanying drawings, and it will be understood that I may make any modiiications in the specilic details of construction shown and described within the scope of the appended claims without departing from or exceeding the spirit of my invention.

Figure I represents a perspectiveview of my improved holder. Fig. II represents a longitudinal sectional View showing the I parts in released position. Fig. III represents a similar view showing the parts locked in engagement with the lens..

In the drawings, in which similar characv ters of reference are employed to denote corresponding parts throughout the several views, the numeral l designates the main or base member of my device having the furcated jaw portion 2 provided with the upstanding pin 3 adapted to fit into the apertures in the clamp pad 5 for securing the said pad in correct position upon the jaw. It willbe understood that the furcationsof Specication of Letters Patent.

.14 which normally swings the Patented July 18, 1916.

Application filed J une 11, 1914. Serial No. 844,572.

Hinged to the opposite end of the main member l from that at which the jaws 2 are located is the plate 6 carrying the spring metal clamping member 7l which has the pair of spaced jaws 8 with depending pins 9 for clampingly engaging a lens or lenses and securing the same in position against the clamping head pad, as is clearly illustrated in Fig. III. A sp1-'ing 10 or the like, may Vbe interposed between the members 1 and 7 to'normally resiliently hold the same apart.

'.I`o secure the members l and 7 indesired adjusted position relative to each other I employ my improved locking means.

Mounted as in the slot 11 of the member 1 is the post 12, having a pin portion 13 at the lower end engaged by the blade spring post outwardly, as' clearly rillustrated in Fig. II. Said post has the serrated or toothed inner edge 15. It will be understood, however, that while I have illustrated this as toothed or serrated that I may use a threaded post or the Vlike should the same appear preferable. 'Ihe plate 6 terminates in an enlargement or head 16, which is split by a flap 17,

through which the upper portion of the post 12 extends, a serrated or toothed jaw portion 18 being disposed at the end of the slot, thisjaw portion being'formed either integral with or separatefrom the head 16, as

may be desired. It Will thus be seen that the spring 14 normally holds the post and jaw members 16 out of engagement with each other, while bringing of the parts into engagement will causelinterlocking of the teeth and thus lock the members 1 and 7 against any relative movement.l To attain this locking of these parts in correct posi7 tion I journal in the head 16 the pin 19 which may be in the form of an eccentric or may have the at face 20 as illustrated. This flat face is normally in engagement with the post 12, but rotation of the pin 19 through the medium of the handle 21 serves to move the flat face out of engagement with the post, thus camming or forcing the post to swing rearwardly against the tension of the spring li and bringing the toothed portion 1 5 and 16 into interlocking engagement. In performing this operation the lens is preferably placed in position on the member 5 and rst a downward pressure applied to the lhandle 21 untilV the lens and member 5 are correctly gripped between the members 1 and 7, the handle then lbeing pressed either rearwardly or forwardly to lock the parts in dis-adjusted position. If desired, however, to slightly increase the swinging tension gripping of the lens within spaced limits, I may make use .of the eccentric or cam members 22, which are mounted on the pin 19 and rotate therewith. In the use of these members movement of the handle 21 serves to rotate the pin-20 and iirst to swing the post into locked position, continued movement causing the cam member 22 to bear down upon-and swing downwardly the member 7 and thus to add an additional spring tension to the initial gripping pressure of the device against the lenses being held on the pad.

From the foregoing description taken in connection with the accompanying drawings, the construction and operation of my improved lens holder should be readily apparent, and it will b e seen that I have provided a simple and'eicient device in which a pressure on the operating handle serves to force the two lens holding members into correct engagement with the lens located' therebetween, while forward or rearward pressure onthe handle will then serve to lock the parts in desired adjusted position. It will be furthernoted that in the particular form here illustrated this forward or rearward pressure on the handle serves not only to lock the parts but also to increase the spring tension gripping action of my deviceto further eliminate the possibility of the lenses slipping, as might occur were not this additional Vtension placed thereon.

I claim:

l. Ina device of the character described,`

the combination with a base member having a downwardly offset furcated clamping head at one end and having a depending rest near `the other end for holding the handle portion of the device in raised position, of a supplemental rigid member pivotally secured to the handle end of the base member and terminating in a downwardly opening hook, a resilient clamp jaw secured to the second pivoted member near its point of pivotance and free therefrom adjacent the hook portion, a shaft journaled in the bight of the hook and having a cam member for engaging and` forcing inward the spring clamp relative to the second pivoted member, a post carried by the base member and adapted for interlocking engagement with the second pivoted member, and means on the shaft for securing the post in said interlocking relation upon actuation of the cam, substantially as and for the purpose described.

2. A lens holder, comprising a pair of pivotally connected members, provided with clamping jaws, a post pivoted to one of the members and projecting through the other, said post having a serrated portion and the other member having a serrated jaw adapted to engagethe seri-ations of the post, and a manually operable .double cam member having a portion for forcing and securing the serrations of the post and jaw in interlocking relation and having a second portion for forcing the j aws into tight engagement with each other after they have been secured in adjusted position through the medium of the post and serrated jaw.

3, The combination with a pair of pivoted members, Y,one of said members having clamping jaws, of a resilient clamping member carried by the other of said two first named members, means forilocking the two first named membersin desired relatively adjusted position, and additional means for swinging the resilient clamping-member in ward after the two pivoted parts have been secured in desired adjusted relation. i

4. In a. lens holder, the combination with a pair of pivoted members, of a resilient gripping member carried by one of said members, means carried by the other pivoted member and extending through the resilient gripping member and the other pivoted member for locking the parts in adjusted position, resilient means .for holding the locking device normally in an operative position, means for shifting the locking device into operative position, and additional means operated upon movement of the locking means intooperative position for exerting additional pressure against the resilient gripping member, substantially as described.

5. A device of the character described, including a main jaw member, a frame member pivoted to the jaw member, a resilient gripping member carried by the frame member, a post pivoted to the main jaw member and extending upwardly through the resilient gripping member and the frame member. said post having a serrated face, a serrated jaw carried by the frame member, means for normally swinging the post to hold its serrations out of engagement with those of the jaw member, a cam device for limiting the swinging movement of the post, a second cam operatively inter-related with the first mentioned cam member, and means for simultaneously operating said cam member, whereby the first cam ymember serves to force the post serrations in interlocking engagement with those of the jaw to secure the two pivoted members in desired adjusted relation, v'hile the second `cam member serves to s )ring the resilient gripping member inwar into operative position.

In ltestimon)T whereof Ivaiiixmy signature 1n presence of two Witnesses.

ALBERT E. MAYNARD.

Witnesses JOSEPH J. DEMERS, C. FRED HILL. 

